Melrose Bancorp (MELR) 10-Q 15 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2015	15-May-15
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Trading Symbol	MELR
Entity Registrant Name	MELROSE BANCORP, INC.
Entity Central Index Key	1600890
Current Fiscal Year End Date	-19
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		2,829,579

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Statement of Financial Position [Abstract]
Cash and due from banks	$20,156	$20,760
Money market funds	2,396	4,342
Federal funds sold	3,041	4,389
Cash and cash equivalents	25,593	29,491
Investments in available-for-sale securities (at fair value)	44,756	41,775
Federal Home Loan Bank stock, at cost	437	437
Loans, net of allowance for loan losses of $521 at March 31, 2015 and $520 at December 31, 2014	134,825	133,910
Premises and equipment, net	1,240	1,254
Co-operative Central Bank deposit	881	881
Bank-owned life insurance	5,071	5,037
Accrued interest receivable	403	382
Other assets	108	175
Total assets	213,314	213,342
Deposits:
Noninterest-bearing	14,377	13,286
Interest-bearing	152,329	153,785
Total deposits	166,706	167,071
Deferred tax liability, net	298	215
Other liabilities	529	593
Total liabilities	167,533	167,879
Stockholders' Equity:
Common stock, par value $0.01 per share, authorized 15,000,000 shares; issued and outstanding 2,829,579 shares at March 31, 2015 and December 31, 2014	28	28
Additional paid-in-capital	26,581	26,575
Retained earnings	19,981	19,832
Unearned compensation-ESOP	-2,169	-2,188
Accumulated other comprehensive income	1,360	1,216
Total stockholders' equity	45,781	45,463
Total liabilities and stockholders' equity	$213,314	$213,342

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]
Allowance for loan losses	$521	$520
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	15,000,000	15,000,000
Common stock, shares issued	2,829,579	2,829,579
Common stock, shares outstanding	2,829,579	2,829,579

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Interest and dividend income:
Interest and fees on loans	$1,163	$1,147
Interest and dividends on securities:
Taxable	201	192
Tax-exempt	5
Other interest	8	3
Total interest and dividend income	1,377	1,342
Interest expense:
Interest on deposits	299	328
Total interest expense	299	328
Net interest and dividend income	1,078	1,014
Provision for loan losses		2
Net interest and dividend income after provision for loan losses	1,078	1,012
Noninterest income:
Fees and service charges	20	21
Gain on sale of securities	1
Gain on sales of loans		9
Income on bank-owned life insurance	20	23
Other income	2	7
Total noninterest income	43	60
Noninterest expense:
Salaries and employee benefits	587	546
Occupancy expense	77	73
Equipment expense	12	13
Data processing expense	77	74
Advertising expense	28	28
Printing and supplies	6	9
FDIC assessment	29	27
Audits and examinations	42	27
Other professional services	27	18
Other expense	28	29
Total noninterest expense	913	844
Income before income tax expense	208	228
Income tax expense	59	69
Net income	$149	$159
Earnings Per Share:
Basic	$0.06
Diluted	$0.06

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$149	$159
Other comprehensive income, net of tax:
Net change in unrealized holding gain on available-for-sale securities	144	292
Comprehensive income	$293	$451

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Stockholders' Equity (USD $)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Unearned Compensation -ESOP [Member]	Accumulated Other Comprehensive Income [Member]
In Thousands, except Share data
Beginning balance at Dec. 31, 2013	$20,577			$20,004		$573
Net income	159			159
Other comprehensive income, net of tax	292					292
Ending balance at Mar. 31, 2014	21,028			20,163		865
Beginning balance at Dec. 31, 2014	45,463	28	26,575	19,832	-2,188	1,216
Beginning balance, shares at Dec. 31, 2014		2,829,579
Net income	149			149
Other comprehensive income, net of tax	144					144
ESOP shares committed to be released (1,887 shares)	25		6		19
Ending balance at Mar. 31, 2015	$45,781	$28	$26,581	$19,981	($2,169)	$1,360
Ending balance, shares at Mar. 31, 2015		2,829,579

Consolidated_Statements_of_Cha1

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical)	Mar. 31, 2015
Statement of Stockholders' Equity [Abstract]
ESOP shares committed to be released, shares	1,887

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net income	$149,000	$159,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Amortization of securities, net of accretion	6,000	2,000
Gain on sale of securities	-1,000
Provision for loan losses		2,000
Change in net deferred loan costs/fees	1,000	4,000
Loans originated for sale		-1,167,000
Proceeds from sales of loans		994,000
Gain on sales of loans		-9,000
Depreciation and amortization	24,000	22,000
(Increase) decrease in accrued interest receivable	-21,000	34,000
Decrease (increase) in other assets	43,000	-438,000
(Decrease) increase in accrued expenses and other liabilities	-64,000	140,000
Decrease in income tax receivable	24,000	70,000
Deferred tax benefit	-1,000	-6,000
Income on bank-owned life insurance	-20,000	-23,000
ESOP expense	25,000	0
Net cash provided by (used in) operating activities	165,000	-216,000
Cash flows from investing activities:
Purchases of available-for-sale securities	-3,994,000	-1,090,000
Proceeds from sale of available-for-sale securities	1,034,000	0
Proceeds from maturities and calls of available-for-sale securities	202,000	1,000,000
Loan originations and principal collections, net	-917,000	637,000
Recoveries on loans previously charged-off	1,000
Capital expenditures	-10,000
Premiums paid on bank-owned life insurance	-14,000	-14,000
Net cash (used in) provided by investing activities	-3,698,000	533,000
Cash flows from financing activities:
Net increase in demand deposits, NOW and savings accounts	240,000	2,182,000
Net decrease in time deposits	-605,000	-6,845,000
Net cash used in financing activities	-365,000	-4,663,000
Net decrease in cash and cash equivalents	-3,898,000	-4,346,000
Cash and cash equivalents at beginning of period	29,491,000	16,995,000
Cash and cash equivalents at end of period	25,593,000	12,649,000
Supplemental disclosures:
Interest paid	299,000	329,000
Income taxes paid	$36,000	$5,000

Nature_of_Operations

Nature of Operations	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Nature of Operations	NOTE 1—NATURE OF OPERATIONS
	Melrose Cooperative Bank (the “Bank”) is a state chartered co-operative bank which was incorporated in 1890 and is headquartered in Melrose, Massachusetts. The Bank operates its business from one banking office located in Melrose, Massachusetts. The Bank is engaged principally in the business of attracting deposits from the general public and investing those deposits in residential real estate loans, and in consumer and small business loans.
	On October 21, 2014, in accordance with a Plan of Conversion (Conversion), Melrose Cooperative Bank completed a mutual-to-stock conversion pursuant to which the Bank became a wholly owned subsidiary of Melrose Bancorp, Inc. (Company), a stock holding company incorporated in February 2014. In connection with the conversion, the Company sold 2,723,409 shares of common stock, including 226,366 shares to a newly established employee stock ownership plan, at an offering price of $10 per share, and issued an additional 106,170 shares of its common stock to the Melrose Cooperative Bank Foundation (the “Foundation”), resulting in an aggregate issuance of 2,829,579 shares of common stock. The net proceeds from the stock offering, net of offering costs of $1,716,000, amounted to $25,518,000. The Company’s stock began trading on October 22, 2014 on the NASDAQ Capital Market under the symbol “MELR”.
	The Bank at the time of the Conversion, established a Liquidation Account in an amount equal to the net worth of the Bank as of the date of the latest consolidated statement of financial condition contained in the final prospectus distributed in connection with the Conversion. The function of the Liquidation Account is to establish a priority on liquidation. The Liquidation Account will be maintained by the Company for the benefit of the eligible account holders who continue to maintain deposit accounts with the Bank following the conversion. Each eligible account holder shall, with respect to each deposit account, hold a related inchoate interest in a portion of the Liquidation Account balance, in relation to each deposit account balance at the eligibility record date, or to such balance as it may be subsequently reduced, as hereinafter provided. The initial Liquidation Account balance shall not be increased, and shall be subject to downward adjustment to the extent of any downward adjustment of any subaccount balance of any eligible account holder in accordance with the Regulations of the Division of Banks of the Commonwealth of Massachusetts.
	In the unlikely event of a complete liquidation of the Bank (and only in such event), following all liquidation payments to creditors (including those to depositors to the extent of their deposit accounts) each eligible account holder shall be entitled to receive a liquidating distribution from the Liquidation Account, in the amount of the then-adjusted subaccount balances for his or her deposit accounts then held, before any liquidating distribution may be made to any holder of the Bank’s capital stock.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	NOTE 2—SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	The accompanying unaudited interim consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles for interim financial information and Rule 10-01 of Regulation S-X. Information included herein as of March 31, 2015 and for the interim periods ended March 31, 2015 and 2014 is unaudited; however, in the opinion of management, all adjustments considered necessary for a fair presentation have been included and were of a normal recurring nature. These statements should be read in conjunction with the audited consolidated financial statements and related notes included in the Company’s Form 10-K for the year ended December 31, 2014. The results of operations for the three months ended March 31, 2015 are not necessarily indicative of the results that may be expected for the year ended December 31, 2015.
	The significant accounting policies are summarized below to assist the reader in better understanding the consolidated financial statements and other data contained herein.
	BASIS OF PRESENTATION:
	The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiary the Bank, and the Bank’s wholly-owned subsidiary, MCBSC, Inc., which is used to hold investment securities. All significant intercompany accounts and transactions have been eliminated in the consolidation.
	USE OF ESTIMATES:
	In preparing consolidated financial statements in conformity with U.S. generally accepted accounting principles, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the consolidated balance sheet and reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses, impairment of securities and deferred income taxes.
	CASH AND CASH EQUIVALENTS:
	As of March 31, 2015 (unaudited), the Company has total cash and cash equivalents in the following banks:
	Eastern Bank	$6,298,000, which represents approximately 13.8% of total stockholders’ equity
	State Street Bank	$2,993,000, which represents approximately 6.5% of total stockholders’ equity
	As of December 31, 2014, the Company has total cash and cash equivalents in the following banks:
	Eastern Bank	$7,440,000, which represents approximately 16.4% of total stockholders’ equity
	State Street Bank	$2,993,000, which represents approximately 6.6% of total stockholders’ equity
	EARNINGS PER SHARE (EPS):
	Basic EPS is calculated by dividing net income by the weighted average number of common shares outstanding adjusted to exclude the weighted average number of unallocated shares held by the ESOP. Diluted EPS, if presented, reflects the potential dilution that would occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in earnings of the entity. For the purposes of computing diluted EPS, the treasury stock method is used. Because the formation of the Company was completed on October 22, 2014, EPS data is not meaningful for prior comparative periods and is therefore not presented.
	The calculation of basic and diluted EPS is presented below. There were no common stock equivalents in the three month period ending March 31, 2015.
		Three Months Ended
		31-Mar-15
	Net income (In Thousands)	$	149
	Basic Common Shares:
	Weighted average common shares outstanding		2,829,579
	Weighted average unallocated ESOP shares		(218,820	)
	Basic and diluted weighted average shares outstanding		2,610,759
	Basic earnings per share	$	0.06
	Diluted earnings per share	$	0.06
	FAIR VALUES OF FINANCIAL INSTRUMENTS:
	Accounting Standards Codification (ASC) 825, “Financial Instruments,” requires that the Company disclose the estimated fair value for its financial instruments. Fair value methods and assumptions used by the Company in estimating its fair value disclosures are as follows:
	Cash and cash equivalents: The carrying amounts reported in the balance sheet for cash and cash equivalents approximate those assets’ fair values.
	Securities: Fair values for securities are based on quoted market prices, where available. If quoted market prices are not available, fair values are based on quoted market prices of comparable instruments.
	Loans held-for-sale: Fair values of loans held-for-sale are based on commitments on hand from investors or prevailing market prices.
	Loans receivable: For variable-rate loans that reprice frequently and with no significant change in credit risk, fair values are based on carrying values. The fair values for other loans are estimated using discounted cash flow analyses, using interest rates currently being offered for loans with similar terms to borrowers of similar credit quality.
	Accrued interest receivable: The carrying amount of accrued interest receivable approximates its fair value.
	Deposit liabilities: The fair values disclosed for demand deposits (e.g., interest and non-interest checking, passbook savings and money market accounts) are, by definition, equal to the amount payable on demand at the reporting date (i.e., their carrying amounts). Fair values for fixed-rate certificate accounts are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on certificate accounts.
	Off-balance sheet instruments: The fair value of commitments to originate loans is estimated using the fees currently charged to enter similar agreements, taking into account the remaining terms of the agreements and the present creditworthiness of the counterparties. For fixed-rate loan commitments and the unadvanced portion of loans, fair value also considers the difference between current levels of interest rates and the committed rates.
	RECENT ACCOUNTING PRONOUNCEMENTS:
	In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-09, “Revenue from Contracts with Customers (Topic 606).” The objective of this ASU is to clarify principles for recognizing revenue and to develop a common revenue standard for Generally Accepted Accounting Principles (GAAP) and International Financial Reporting Standards. The guidance in this ASU affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets unless those contracts are within the scope of other standards. The core principal of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The amendments in this update are effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early application is not permitted. The Company is currently reviewing this ASU to determine if it will have an impact on its consolidated financial statements.
	In February 2015, the FASB issued ASU 2015-02, “Consolidation (Topic 810): Amendments to the Consolidation Analysis.” The amendments in this ASU affect reporting entities that are required to evaluate whether they should consolidate certain legal entities. Specifically, the amendments: (1) Modify the evaluation of whether limited partnerships and similar legal entities are variable interest entities (“VIEs”) or voting interest entities; (2) Eliminate the presumption that a general partner should consolidate a limited partnership; (3) Affect the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangements and related party relationships; and (4) Provide a scope exception from consolidation guidance for reporting entities with interests in legal entities that are required to comply with or operate in accordance with requirements that are similar to those in Rule 2a-7 of the Investment Company Act of 1940 for registered money market funds. ASU 2015-02 is effective for interim and annual reporting periods beginning after December 15, 2015. The Company anticipates that the adoption of this ASU will not have a material impact on its consolidated financial statements.
	In April 2015, the FASB issued ASU 2015-03, “Interest—Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs.” The amendments in this ASU require that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in this ASU. The standard is effective for interim and annual reporting periods beginning after December 15, 2015, with early adoption permitted. The guidance should be applied on a retrospective basis. The Company anticipates that the adoption of this ASU will not have a material impact on its consolidated financial statements.
	In April 2015, the FASB issued ASU 2015-05, “Intangibles – Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement.” This ASU provides guidance to customers about whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, the customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. The new guidance does not change the accounting for a customer’s accounting for service contracts. ASU 2015-05 is effective for interim and annual reporting periods beginning after December 15, 2015. The Company anticipates that the adoption of this ASU will not have a material impact on its consolidated financial statements.

Investments_in_AvailableForSal

Investments in Available-For-Sale Securities	3 Months Ended
	Mar. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Investments in Available-For-Sale Securities	NOTE 3—INVESTMENTS IN AVAILABLE-FOR-SALE SECURITIES
	Debt and equity securities have been classified in the consolidated balance sheets according to management’s intent. The amortized cost basis of securities and their approximate fair values are as follows:
		Amortized		Gross		Gross
		Cost		Unrealized		Unrealized
		Basis		Gains		Losses		Fair Value
		(In Thousands)
	March 31, 2015: (unaudited)
	U.S. government and federal agency obligations	$	4,997	$	8	$	18	$	4,987
	Debt securities issued by states of the United States and political subdivisions of the states		542		—		3		539
	Corporate bonds and notes		16,602		52		14		16,640
	Preferred stock		3,000		34		32		3,002
	Mortgage-backed securities		2,444		—		22		2,422
	Marketable equity securities		14,875		2,698		407		17,166
		$	42,460	$	2,792	$	496	$	44,756
	December 31, 2014:
	U.S. government and federal agency obligations	$	4,007	$	3	$	20	$	3,990
	Debt securities issued by states of the United States and political subdivisions of the states		544		—		4		540
	Corporate bonds and notes		15,238		38		35		15,241
	Preferred stock		3,000		—		96		2,904
	Mortgage-backed securities		2,138		—		23		2,115
	Marketable equity securities		14,780		2,641		436		16,985
		$	39,707	$	2,682	$	614	$	41,775
	The scheduled maturities of debt securities were as follows as of the dates indicated:
		Fair
		Value
		(In Thousands)
	March 31, 2015 (unaudited)
	Due within one year	$	6,772
	Due after one year through five years		13,399
	Due after five years through ten years		2,016
	Due after ten years		1,022
	Mortgage-backed securities		2,422
	Asset-backed securities		991
	Preferred stock, no stated maturity		968
		$	27,590
		Fair
		Value
		(In Thousands)
	December 31, 2014
	Due within one year	$	5,278
	Due after one year through five years		12,990
	Due after five years through ten years		1,491
	Due after ten years		994
	Mortgage-backed securities		2,115
	Asset-backed securities		1,011
	Preferred stock, no stated maturity		911
		$	24,790
	There were no securities of issuers whose aggregate carrying amount exceeded 10% of stockholders’ equity as of March 31, 2015 (unaudited) and December 31, 2014.
	During the three months ended March 31, 2015, proceeds from the sale of an available-for-sale security amounted to $1,034,000. The gross realized gain on the sale amounted to $1,000 and there were no gross realized losses. The tax expense applicable to the realized gain for the three months ended March 31, 2015 amounted to less than $1,000. During the three months ended March 31, 2014, there were no sales of available-for-sale securities.
	The Company had no pledged securities as of March 31, 2015 (unaudited) and December 31, 2014.
	The aggregate fair value and unrealized losses of securities that have been in a continuous unrealized loss position for less than twelve months and for twelve months or more, and are not other-than-temporarily impaired, are as follows:
		Less than 12 months				12 Months or Longer				Total
		Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
		Value		Losses		Value		Losses		Value		Losses
		(In Thousands)
	March 31, 2015: (unaudited)
	U.S. government and federal agency obligations	$	1,490	$	12	$	1,495	$	6	$	2,985	$	18
	Debt securities issued by states of the United States and political subdivisions of the states		539		3		—		—		539		3
	Corporate bonds and notes		1,004		5		1,489		9		2,493		14
	Preferred stock		—		—		938		32		938		32
	Mortgage-backed securities		2,423		22		—		—		2,423		22
	Marketable equity securities		—		—		9,363		407		9,363		407
	Total temporarily impaired securities	$	5,456	$	42	$	13,285	$	454	$	18,741	$	496
	December 31, 2014:
U.S. government and federal agency obligations	$	2,006	$	6	$	1,486	$	14	$	3,492	$	20
Debt securities issued by states of the United States and political subdivisions of the states		540		4		—		—		540		4
Corporate bonds and notes		4,978		11		1,974		24		6,952		35
Preferred stock		—		—		2,904		96		2,904		96
Mortgage-backed securities		2,115		23		—		—		2,115		23
Marketable equity securities		—		—		10,306		436		10,306		436
Total temporarily impaired securities	$	9,639	$	44	$	16,670	$	570	$	26,309	$	614
The Company conducts periodic reviews of investment securities with unrealized losses to evaluate whether the impairment is other-than-temporary. The Company’s review for impairment generally includes a determination of the cause, severity and duration of the impairment; and an analysis of both positive and negative evidence available. The Company also determines if it has the ability and intent to hold the investment for a period of time sufficient to allow for anticipated recovery to cost basis. Based on the Company’s review of securities in the investment portfolio, management deemed securities with unrealized losses as of March 31, 2015 (unaudited) and December 31, 2014 to be temporarily impaired and has the ability and intent to hold these securities until recovery to cost basis occurs. A summary of these reviews is as follows.
March 31, 2015 (unaudited)
Unrealized losses on U.S. Government and federal agency obligations amounted to $18,000 and consisted of four securities. Unrealized losses on corporate bonds and notes amounted to $14,000 and consisted of four securities. The unrealized losses on these debt securities were individually all less than 2.5% of amortized cost basis, and the unrealized losses were primarily due to changes in interest rates. In regard to corporate debt, the Company also considers the issuer’s current financial condition and its ability to make future scheduled interest and principal payments on a timely basis in assessing other-than-temporary impairment.
Unrealized losses on preferred stocks amounted to $32,000, or 3.2%, of amortized cost and consisted of one investment. This loss was due to changes in interest rates. The Company reviewed this investment for impairment by considering factors such as, among other things, the financial condition and ability of the issuer to continue to pay dividends, and any specific events that may affect the operations of the issuer.
Unrealized losses on marketable equity securities consist of six mutual funds. Four mutual funds invest mainly in short-term bonds, with unrealized losses amounting to $222,000, or 4.1% of cost basis, with individual losses ranging from 0.1% to 0.7% of the mutual fund’s cost basis; and two mutual funds invest in Government National Mortgage Association (GNMA) securities with a total combined unrealized loss of $185,000, or approximately 4.3% of each mutual fund’s cost basis. These six mutual funds have been in an unrealized loss position ranging from one to three years. The cause of the impairment in these mutual funds is due to changes in interest rates and the continued underperformance of most fixed income asset classes during the three months ended March 31, 2015 (unaudited). The Company considered several factors in reviewing these mutual fund investments, including underlying investment performance, composition and rating of the securities in the mutual fund, and management of the mutual funds’ issuer.
December 31, 2014
Unrealized losses on U.S. Government and federal agency obligations amounted to $19,000 and consisted of four securities. Unrealized losses on corporate bonds and notes amounted to $35,000 and consisted of twelve securities. Unrealized losses on municipal bonds amounted to $4,000 and consisted of two securities. Unrealized losses on mortgage-backed and asset-backed securities amounted to $24,000 and consisted of three securities. The unrealized losses on all of these debt securities were each individually less than 2.0% of amortized cost basis, and the unrealized losses were primarily due to changes in interest rates. In regard to corporate debt, the Company also considers the issuer’s current financial condition and its ability to make future scheduled interest and principal payments on a timely basis in assessing other-than-temporary impairment.
The Company’s investments in preferred stocks were purchased in the first quarter of 2013, and consist of three investments with unrealized losses amounting to $96,000, or 3.2% of amortized cost. These three investments consist of Kayne Anderson MLP, which has an unrealized loss of $1,000, or 0.1 percent of amortized cost, General Electric Capital Corporation, which has an unrealized loss of $6,000, or 0.6% of amortized cost, and Public Storage Inc., which has an unrealized loss of $89,000, or 8.9% of amortized cost. These losses were due to changes in interest rates. The Company reviewed these investments for impairment by considering factors such as, among other things, the financial condition and ability of the issuer to continue to pay dividends, and any specific events that may affect the operations of the issuer.
Unrealized losses on marketable equity securities consist of seven mutual funds. Five mutual funds invest mainly in short-term bonds, with unrealized losses amounting to $238,000, or 3.7% of cost basis, with individual losses ranging from 0.8% to 8.4% of the mutual fund’s cost basis; and two mutual funds invest in GNMA securities with a total combined unrealized loss of $198,000, or approximately 4.6% of each mutual fund’s cost basis. These seven mutual funds have been in an unrealized loss position ranging from one to three years. The cause of the impairment in these mutual funds is due to changes in interest rates and the continued underperformance of most fixed income asset classes during the year ended December 31, 2014. The Company considered several factors in reviewing these mutual fund investments, including underlying investment performance, composition and rating of the securities in the mutual fund, and management of the mutual funds’ issuer.

Loans

Loans	3 Months Ended
	Mar. 31, 2015
Receivables [Abstract]
Loans	NOTE 4—LOANS
	Loans consisted of the following at:
		March 31,			December 31,
		2015			2014
		(In Thousands)
		(unaudited)
	Real estate loans:
	One-to four-family residential	$	118,998		$	118,144
	Home equity loans and lines of credit		10,802			10,811
	Commercial		2,472			2,462
	Construction		2,854			2,787
	Consumer loans		141			146
	Total loans		135,267			134,350
	Allowance for loan losses		(521	)		(520	)
	Deferred loan costs, net		79			80
	Net loans	$	134,825		$	133,910
	The following tables set forth information on the allowance for loan losses at and for the three months ended (unaudited):
		Real Estate:
		One- to four-			Home Equity Loans							Consumer
		family Residential			and Lines of Credit			Commercial		Construction		Loans		Unallocated			Total
		(In Thousands)
	Three Months Ended March 31, 2015 (unaudited)
	Allowance for loan losses:
	Beginning balance	$	414		$	58		$	25	$	21	$	1	$	1		$	520
	Charge offs		—			—			—		—		—		—			—
	Recoveries		—			—			—		—		1		—			1
	Provision (benefit)		—			—			—		—		—		—			—
	Ending balance	$	414		$	58		$	25	$	21	$	2	$	1		$	521
	At March 31, 2015 (unaudited)
	Ending balance:
	Individually evaluated for impairment	$	—		$	—		$	—	$	—	$	—	$	—		$	—
	Ending balance:
	Collectively evaluated for impairment		414			58			25		21		2		1			521
	Total allowance for loan losses ending balance	$	414		$	58		$	25	$	21	$	2	$	1		$	521
	Loans:
	Ending balance:
	Individually evaluated for impairment	$	—		$	—		$	—	$	—	$	—	$	—		$	—
	Ending balance:
	Collectively evaluated for impairment		118,998			10,802			2,472		2,854		141		—			135,267
	Total loans ending balance	$	118,998		$	10,802		$	2,472	$	2,854	$	141	$	—		$	135,267
	Three Months Ended March 31, 2014 (unaudited)
	Allowance for loan losses:
	Beginning balance	$	414		$	55		$	20	$	14	$	1	$	6		$	510
	Charge offs		—			—			—		—		—		—			—
	Recoveries		—			—			—		—		—		—			—
	(Benefit) provision		(8	)		(1	)		10		5		—		(4	)		2
	Ending balance	$	406		$	54		$	30	$	19	$	1	$	2		$	512
	The following tables set forth information on the allowance for loan losses at December 31, 2014:
		Real Estate:
		One- to four-			Home Equity Loans							Consumer
		family Residential			and Lines of Credit			Commercial		Construction		Loans		Unallocated			Total
		(In Thousands)
	At December 31, 2014:
	Allowance for loan losses:
	Ending balance:
	Individually evaluated for impairment	$	—		$	—		$	—	$	—	$	—	$	—		$	—
	Ending balance:
	Collectively evaluated for impairment		414			58			25		21		1		1			520
	Total allowance for loan losses ending balance	$	414		$	58		$	25	$	21	$	1	$	1		$	520
	Loans:
	Ending balance:
	Individually evaluated for impairment	$	—		$	—		$	—	$	—	$	—	$	—		$	—
	Ending balance:
	Collectively evaluated for impairment		118,144			10,811			2,462		2,787		146		—			134,350
Total loans ending balance	$	118,144		$	10,811		$	2,462	$	2,787	$	146	$	—		$	134,350
The following tables set forth information regarding nonaccrual loans and past-due loans:
																90 Days or More
	30 - 59			60 - 89			90 Days or		Total Past		Total					Past Due and		Non-
	Days			Days			More Past Due		Due		Current		Total			Accruing		Accrual
	(In Thousands)
At March 31, 2015 (unaudited)
Real estate loans:
One-to four-family residential	$	1,099		$	25		$	268	$	1,392	$	117,606	$	118,998		$	—	$	505
Home equity loans and lines of credit		—			—			202		202		10,600		10,802			—		202
Commercial		—			—			—		—		2,472		2,472			—		—
Construction		—			—			—		—		2,854		2,854			—		—
Consumer loans		3			—			—		3		138		141			—		—
Total	$	1,102		$	25		$	470	$	1,597	$	133,670	$	135,267		$	—	$	707
At December 31, 2014
Real estate loans:
One-to four-family residential	$	817		$	122		$	113	$	1,052	$	117,092	$	118,144		$	—	$	421
Home equity loans and lines of credit		—			198			4		202		10,609		10,811			—		202
Commercial		—			—			—		—		2,462		2,462			—		—
Construction		—			—			—		—		2,787		2,787			—		—
Consumer loans		—			1			—		1		145		146			—		—
Total	$	817		$	321		$	117	$	1,255	$	133,095	$	134,350		$	—	$	623
As of and during the three months ended March 31, 2015 and 2014 (unaudited) there were no loans that met the definition of an impaired loan in ASC 310-10-35.
During the three months ended March 31, 2015 and 2014 (unaudited) there were no loans that met the definition of a troubled debt restructured loan in ASC 310-10-50.
Credit Quality Information
The Company utilizes a seven grade internal loan rating system for commercial real estate, construction and commercial loans as follows:
Loans rated 1 - 3: Loans in these categories are considered “pass” rated loans with low to average risk.
Loans rated 4: Loans in this category are considered “special mention.” These loans are starting to show signs of potential weakness and are being closely monitored by management.
Loans rated 5: Loans in this category are considered “substandard.” Generally, a loan is considered substandard if it is inadequately protected by the current net worth and paying capacity of the obligors and/or the collateral pledged. There is a distinct possibility that the Company will sustain some loss if the weakness is not corrected.
Loans rated 6: Loans in this category are considered “doubtful.” Loans classified as doubtful have all the weaknesses inherent in those classified substandard with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, highly questionable and improbable.
Loans rated 7: Loans in this category are considered uncollectible (“loss”) and of such little value that their continuance as loans is not warranted.
On an annual basis, or more often if needed, the Bank formally reviews the ratings on all commercial real estate, construction and commercial loans.
As of March 31, 2015 (unaudited), one- to four- family residential real estate loans with balances totaling $375,000 and home equity loans and lines of credit totaling $202,000 had a risk rating of “substandard” and all other loans outstanding had a risk rating of “pass.”
As of December 31, 2014, one- to four- family residential real estate loans with balances totaling $394,000 and home equity loans and lines of credit totaling $202,000 had a risk rating of “substandard” and all other loans outstanding had a risk rating of “pass.”

Premises_and_Equipment

Premises and Equipment	3 Months Ended
	Mar. 31, 2015
Property, Plant and Equipment [Abstract]
Premises and Equipment	NOTE 5—PREMISES AND EQUIPMENT
	The following is a summary of premises and equipment:
		March 31,			December 31,
		2015			2014
		(In Thousands)
		(unaudited)
	Land	$	393		$	393
	Building and improvements		1,817			1,817
	Furniture and equipment		491			482
	Data processing equipment		218			217
			2,919			2,909
	Accumulated depreciation		(1,679	)		(1,655	)
		$	1,240		$	1,254

Deposits

Deposits	3 Months Ended
	Mar. 31, 2015
Banking and Thrift [Abstract]
Deposits	NOTE 6—DEPOSITS
	The aggregate amount of time deposit accounts in denominations of $100,000 or more as of March 31, 2015 (unaudited) and December 31, 2014 was $34,640,000 and $34,583,000, respectively. The aggregate amount of time deposit amounts in denominations that meet or exceed the Federal Deposit Insurance Corporation (FDIC) insurance limit of $250,000 as of March 31, 2015 (unaudited) and December 31, 2014 amounted to $12,500,000 and $12,015,000, respectively.
	For time deposits as of March 31, 2015 (unaudited) the scheduled maturities for each of the following years ended March 31 are as follows:
		(In Thousands)
	2016	$	33,212
	2017		26,985
	2018		4,761
	2019		5,073
	2020		610
		$	70,641
	Deposits from related parties held by the Bank as of March 31, 2015 (unaudited) and December 31, 2014 amounted to $5,425,000 and $5,044,000, respectively.

Borrowed_Funds

Borrowed Funds	3 Months Ended
	Mar. 31, 2015
Brokers and Dealers [Abstract]
Borrowed Funds	NOTE 7—BORROWED FUNDS
	The Company is permitted to borrow from the Federal Reserve Bank of Boston under certain conditions. Any such borrowings would be required to be fully secured by pledges of collateral satisfactory to the Federal Reserve Bank of Boston. In addition, as of March 31, 2015 (unaudited) the Company has the ability to borrow up to $88.3 million from the Federal Home Loan Bank of Boston (collateralized) and $5.0 million from the Co-Operative Central Bank.

Financial_Instruments

Financial Instruments	3 Months Ended
	Mar. 31, 2015
Investments, All Other Investments [Abstract]
Financial Instruments	NOTE 8—FINANCIAL INSTRUMENTS
	The Company is party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to originate loans and unadvanced funds on loans. The instruments involve, to varying degrees, elements of credit risk in excess of the amount recognized in the balance sheets. The contract amounts of those instruments reflect the extent of involvement the Company has in particular classes of financial instruments.
	The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for loan commitments is represented by the contractual amounts of those instruments. The Company uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments.
	Commitments to originate loans are agreements to lend to a customer provided there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. The Company evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on management’s credit evaluation of the borrower. Collateral held varies, but may include secured interests in mortgages, accounts receivable, inventory, property, plant and equipment and income-producing properties.
	Notional amounts of financial instrument liabilities with off-balance sheet credit risk are as follows:
		March 31,		December 31,
		2015		2014
		(In Thousands)
		(unaudited)
	Commitments to originate loans	$	2,072	$	3,713
	Unused lines of credit		11,415		11,065
	Due to borrowers on unadvanced construction loans		491		323
		$	13,978	$	15,101

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	NOTE 9—FAIR VALUE MEASUREMENTS
	ASC 820-10, “Fair Value Measurements and Disclosures,” provides a framework for measuring fair value under generally accepted accounting principles. This guidance also allows an entity the irrevocable option to elect fair value for the initial and subsequent measurement for certain financial assets and liabilities on a contract-by-contract basis.
	In accordance with ASC 820-10, the Company groups its financial assets and financial liabilities measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value.
	Level 1 - Valuations for assets and liabilities traded in active exchange markets, such as the New York Stock Exchange. Level 1 also includes U.S. Treasury, other U.S. Government and agency mortgage-backed securities that are traded by dealers or brokers in active markets. Valuations are obtained from readily available pricing sources for market transactions involving identical assets or liabilities.
	Level 2 - Valuations for assets and liabilities traded in less active dealer or broker markets. Valuations are obtained from third party pricing services for identical or comparable assets or liabilities.
	Level 3 - Valuations for assets and liabilities that are derived from other methodologies, including option pricing models, discounted cash flow models and similar techniques, are not based on market exchange, dealer, or broker traded transactions. Level 3 valuations incorporate certain assumptions and projections in determining the fair value assigned to such assets and liabilities.
	A financial instrument’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement.
	A description of the valuation methodologies used for instruments measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below. These valuation methodologies were applied to all of the Company’s financial assets and financial liabilities carried at fair value for March 31, 2015 (unaudited) and December 31, 2014. The Company did not have any significant transfers of assets between levels 1 and 2 of the fair value hierarchy during the three months ended March 31, 2015 (unaudited) and the year ended December 31, 2014.
	The Company’s investments in preferred stock and marketable equity securities are generally classified within level 1 of the fair value hierarchy because they are valued using quoted market prices.
	The Company’s investment in debt securities available-for-sale is generally classified within level 2 of the fair value hierarchy. For these securities, we obtain fair value measurements from independent pricing services. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. treasury yield curve, trading levels, market consensus prepayment speeds, credit information and the instrument’s terms and conditions.
	Level 3 is for positions that are not traded in active markets or are subject to transfer restrictions, valuations are adjusted to reflect illiquidity and/or non-transferability, and such adjustments are generally based on available market evidence. In the absence of such evidence, management’s best estimate is used. Subsequent to inception, management only changes level 3 inputs and assumptions when corroborated by evidence such as transactions in similar instruments, completed or pending third-party transactions in the underlying investment or comparable entities, subsequent rounds of financing, recapitalization and other transactions across the capital structure, offerings in the equity or debt markets, and changes in financial ratios or cash flows.
	The following summarizes assets measured at fair value on a recurring basis:
		Fair Value Measurements at Reporting Date Using:
		Total		Quoted Prices in		Significant Other		Significant
				Active Markets		Observable		Unobservable
				for Identical Assets		Inputs		Inputs
				Level 1		Level 2		Level 3
		(In Thousands)
	March 31, 2015: (unaudited)
	U.S. government and federal agency obligations	$	4,987	$	—	$	4,987	$	—
	Debt securities issued by states of the United States and political subdivisions of the states		539		—		539		—
	Corporate bonds and notes		16,640		—		16,640		—
	Preferred stock		3,002		3,002		—		—
	Mortgage-backed securities		2,422		—		2,422		—
	Marketable equity securities		17,166		17,166		—		—
	Totals	$	44,756	$	20,168	$	24,588	$	—
	December 31, 2014:
	U.S. government and federal agency obligations	$	3,990	$	—	$	3,990	$	—
	Debt securities issued by states of the United States and political subdivisions of the states		540		—		540		—
	Corporate bonds and notes		15,241		—		15,241		—
	Preferred stock		2,904		2,904		—		—
	Mortgage-backed securities		2,115		—		2,115		—
	Marketable equity securities		16,985		16,985		—		—
	Totals	$	41,775	$	19,889	$	21,886	$	—
	Under certain circumstances the Company makes adjustments to fair value for its assets and liabilities although they are not measured at fair value on an ongoing basis. At March 31, 2015 (unaudited) and December 31, 2014, there were no financial instruments carried on the consolidated balance sheet for which a nonrecurring change in fair value has been recorded.
	The estimated fair values of the Company’s financial instruments, all of which are held or issued for purposes other than trading, are as follows:
		March 31, 2015 (unaudited)
		Carrying		Fair Value
		Amount		Level 1		Level 2		Level 3		Total
		(In Thousands)
	Financial assets:
	Cash and cash equivalents	$	25,593	$	25,593	$	—	$	—	$	25,593
	Available-for-sale securities		44,756		20,168		24,588		—		44,756
	Federal Home Loan Bank stock		437		437		—		—		437
	Loans, net		134,825		—		—		135,719		135,719
	Co-operative Central Bank deposit		881		881		—		—		881
	Accrued interest receivable		403		403		—		—		403
	Financial liabilities:
	Deposits		166,706		—		167,881		—		167,881
		December 31, 2014
		Carrying		Fair Value
		Amount		Level 1		Level 2		Level 3		Total
		(In Thousands)
	Financial assets:
	Cash and cash equivalents	$	29,491	$	29,491	$	—	$	—	$	29,491
	Available-for-sale securities		41,775		19,889		21,886		—		41,775
	Federal Home Loan Bank stock		437		437		—		—		437
	Loans, net		133,910		—		—		135,513		135,513
	Co-operative Central Bank deposit		881		881		—		—		881
	Accrued interest receivable		382		382		—		—		382
	Financial liabilities:
	Deposits		167,071		—		167,881		—		167,881
	The carrying amounts of financial instruments shown in the above table are included in the consolidated balance sheets under the indicated captions. Accounting policies related to financial instruments are described in Note 2.

Other_Comprehensive_Income

Other Comprehensive Income	3 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Other Comprehensive Income	NOTE 10—OTHER COMPREHENSIVE INCOME
	Accounting principles generally require that recognized revenue, expenses, gains and losses be included in net income. Although certain changes in assets and liabilities are reported as a separate component of the stockholders’ equity section of the consolidated balance sheets, such items, along with net income, are components of comprehensive income.
	The components of other comprehensive income, included in stockholders’ equity, are as follows:
			For the three months ended March 31,
			2015			2014
			(In Thousands)
			(unaudited)
	Net unrealized holding gains on available-for-sale securities		$	229		$	455
	Reclassification adjustment for realized gains in net income (1)			(1	)		—
	Other comprehensive income before income tax effect			228			455
	Income tax expense			(84	)		(163	)
	Other comprehensive income, net of tax		$	144		$	292
	-1	Reclassification adjustments include realized securities gains. Gains have been reclassified out of accumulated other comprehensive income and affect certain captions in the consolidated statements of income as follows: pre-tax amount is reflected as a gain on sale of securities, the tax effect is included in income tax expense, and the after-tax amount is included in net income.
	Accumulated other comprehensive income as of March 31, 2015 (unaudited) and December 31, 2014 consists of net unrealized holding gains on available-for-sale securities, net of taxes.

Regulatory_Matters

Regulatory Matters	3 Months Ended
	Mar. 31, 2015
Banking and Thrift [Abstract]
Regulatory Matters	NOTE 11—REGULATORY MATTERS
	The Bank is subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Bank’s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Bank must meet specific capital guidelines that involve quantitative measures of the Bank’s assets, liabilities and certain off-balance sheet items as calculated under regulatory accounting practices. The Bank’s capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors.
	Effective January 1, 2015 (with a phase-in period of two to four years for certain components), the Bank became subject to new capital regulations adopted by the Board of Governors of the Federal Reserve System (“FRB”) and the FDIC, which implement the Basel III regulatory capital reforms and the changes required by the Dodd-Frank Act. The new regulations require a new common equity Tier 1 (“CETI”) capital ratio of 4.5%, increase the minimum Tier 1 capital to risk-weighted assets ratio to 6.0% from 4.0%, require a minimum total capital to risk-weighted assets ratio of 8.0% and require a minimum Tier 1 leverage ratio of 4.0%. CETI generally consists of common stock and retained earnings, subject to applicable adjustments and deductions. Under new prompt corrective action regulations, in order to be considered “well capitalized,” the Bank must maintain a CETI capital ratio of 6.5% (new) and a Tier 1 ratio of 8.0% (increased from 6.0%), a total risk based capital ratio of 10% (unchanged) and a Tier 1 leverage ratio of 5.0% (unchanged). In addition, the regulations establish a capital conservation buffer above the required capital ratios that phases in beginning January 1, 2016 at 0.625% of risk-weighted assets and increases each year by 0.625% until it is fully phased in at 2.5% effective January 1, 2019. Beginning January 1, 2016, failure to maintain the capital conservation buffer will limit the ability of the Bank and the Company to pay dividends, repurchase shares or pay discretionary bonuses.
	The new regulations implemented changes to what constitutes regulatory capital. Certain instruments will no longer constitute qualifying capital, subject to phase-out periods. In addition, Tier 2 capital is no longer limited to the amount of Tier 1 capital included in total capital. Mortgage servicing rights, certain deferred tax assets and investments in unconsolidated subsidiaries over designated percentages of CETI will be deducted from capital. The Bank has elected to permanently opt-out of the inclusion of accumulated other comprehensive income in capital calculations, as permitted by the regulations. This opt-out will reduce the impact of market volatility on the Bank’s regulatory capital ratios.
	The new regulations also changed the risk weights of certain assets, including an increase in the risk weight of certain high volatility commercial real estate acquisition, development and construction loans and non-residential mortgage loans that are 90 days past due or on non-accrual status to 150% from 100%, a credit conversion factor for the unused portion of commitments with maturities of less than one year that are not cancellable to 20% from 0%, an increase in the risk weight for mortgage servicing rights and deferred tax assets that are not deducted from capital to 250% from 100%, and an increase in the risk weight for equity exposures to 600% from 0%.
	As of March 31, 2015 (unaudited) and December 31, 2014, the most recent notification from the FDIC categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. There are no conditions or events since that notification that management believes have changed the institution’s category.
	The Bank’s actual capital amounts and ratios are presented in the following table.
			March 31,			December 31,
			2015			2014
			(Dollars in Thousands)
	Regulatory Capital:
	Stockholders’ Equity		$	32,882		$	32,595
	Less: Net unrealized gains on investment securities			(1,375	)		(1,231	)
	Common Equity Tier 1 Capital			31,507			N/A
	Tier 1 Capital			31,507			31,364
	Allowable Reserve for Credit Losses and Unfunded Commitments			1,552			1,510
	Total Regulatory Capital (1)		$	33,059		$	32,874
	Risk-weighted assets (1)		$	116,880		$	119,395
	Key Regulatory Capital Ratios (1):
	Common Equity Tier 1 Capital Ratio			26.96	%		N/A
	Tier 1 Capital Ratio			26.96	%		26.27	%
	Total Capital Ratio			28.28	%		27.53	%
	Tier 1 Leverage Ratio			15.1	%		14.78	%
	-1	March 31, 2015 capital levels and ratios were calculated under the new capital regulations, which became effective January 1, 2015.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
BASIS OF PRESENTATION	BASIS OF PRESENTATION:
	The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiary the Bank, and the Bank’s wholly-owned subsidiary, MCBSC, Inc., which is used to hold investment securities. All significant intercompany accounts and transactions have been eliminated in the consolidation.
USE OF ESTIMATES	USE OF ESTIMATES:
	In preparing consolidated financial statements in conformity with U.S. generally accepted accounting principles, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the consolidated balance sheet and reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses, impairment of securities and deferred income taxes.
CASH AND CASH EQUIVALENTS	CASH AND CASH EQUIVALENTS:
	As of March 31, 2015 (unaudited), the Company has total cash and cash equivalents in the following banks:
	Eastern Bank	$6,298,000, which represents approximately 13.8% of total stockholders’ equity
	State Street Bank	$2,993,000, which represents approximately 6.5% of total stockholders’ equity
	As of December 31, 2014, the Company has total cash and cash equivalents in the following banks:
	Eastern Bank	$7,440,000, which represents approximately 16.4% of total stockholders’ equity
	State Street Bank	$2,993,000, which represents approximately 6.6% of total stockholders’ equity
EARNINGS PER SHARE (EPS)	EARNINGS PER SHARE (EPS):
	Basic EPS is calculated by dividing net income by the weighted average number of common shares outstanding adjusted to exclude the weighted average number of unallocated shares held by the ESOP. Diluted EPS, if presented, reflects the potential dilution that would occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in earnings of the entity. For the purposes of computing diluted EPS, the treasury stock method is used. Because the formation of the Company was completed on October 22, 2014, EPS data is not meaningful for prior comparative periods and is therefore not presented.
	The calculation of basic and diluted EPS is presented below. There were no common stock equivalents in the three month period ending March 31, 2015.
		Three Months Ended
		31-Mar-15
	Net income (In Thousands)	$	149
	Basic Common Shares:
	Weighted average common shares outstanding		2,829,579
	Weighted average unallocated ESOP shares		(218,820	)
	Basic and diluted weighted average shares outstanding		2,610,759
	Basic earnings per share	$	0.06
	Diluted earnings per share	$	0.06
FAIR VALUES OF FINANCIAL INSTRUMENTS	FAIR VALUES OF FINANCIAL INSTRUMENTS:
	Accounting Standards Codification (ASC) 825, “Financial Instruments,” requires that the Company disclose the estimated fair value for its financial instruments. Fair value methods and assumptions used by the Company in estimating its fair value disclosures are as follows:
	Cash and cash equivalents: The carrying amounts reported in the balance sheet for cash and cash equivalents approximate those assets’ fair values.
	Securities: Fair values for securities are based on quoted market prices, where available. If quoted market prices are not available, fair values are based on quoted market prices of comparable instruments.
	Loans held-for-sale: Fair values of loans held-for-sale are based on commitments on hand from investors or prevailing market prices.
	Loans receivable: For variable-rate loans that reprice frequently and with no significant change in credit risk, fair values are based on carrying values. The fair values for other loans are estimated using discounted cash flow analyses, using interest rates currently being offered for loans with similar terms to borrowers of similar credit quality.
	Accrued interest receivable: The carrying amount of accrued interest receivable approximates its fair value.
	Deposit liabilities: The fair values disclosed for demand deposits (e.g., interest and non-interest checking, passbook savings and money market accounts) are, by definition, equal to the amount payable on demand at the reporting date (i.e., their carrying amounts). Fair values for fixed-rate certificate accounts are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on certificate accounts.
	Off-balance sheet instruments: The fair value of commitments to originate loans is estimated using the fees currently charged to enter similar agreements, taking into account the remaining terms of the agreements and the present creditworthiness of the counterparties. For fixed-rate loan commitments and the unadvanced portion of loans, fair value also considers the difference between current levels of interest rates and the committed rates.
RECENT ACCOUNTING PRONOUNCEMENTS	RECENT ACCOUNTING PRONOUNCEMENTS:
	In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-09, “Revenue from Contracts with Customers (Topic 606).” The objective of this ASU is to clarify principles for recognizing revenue and to develop a common revenue standard for Generally Accepted Accounting Principles (GAAP) and International Financial Reporting Standards. The guidance in this ASU affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets unless those contracts are within the scope of other standards. The core principal of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The amendments in this update are effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early application is not permitted. The Company is currently reviewing this ASU to determine if it will have an impact on its consolidated financial statements.
	In February 2015, the FASB issued ASU 2015-02, “Consolidation (Topic 810): Amendments to the Consolidation Analysis.” The amendments in this ASU affect reporting entities that are required to evaluate whether they should consolidate certain legal entities. Specifically, the amendments: (1) Modify the evaluation of whether limited partnerships and similar legal entities are variable interest entities (“VIEs”) or voting interest entities; (2) Eliminate the presumption that a general partner should consolidate a limited partnership; (3) Affect the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangements and related party relationships; and (4) Provide a scope exception from consolidation guidance for reporting entities with interests in legal entities that are required to comply with or operate in accordance with requirements that are similar to those in Rule 2a-7 of the Investment Company Act of 1940 for registered money market funds. ASU 2015-02 is effective for interim and annual reporting periods beginning after December 15, 2015. The Company anticipates that the adoption of this ASU will not have a material impact on its consolidated financial statements.
	In April 2015, the FASB issued ASU 2015-03, “Interest—Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs.” The amendments in this ASU require that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in this ASU. The standard is effective for interim and annual reporting periods beginning after December 15, 2015, with early adoption permitted. The guidance should be applied on a retrospective basis. The Company anticipates that the adoption of this ASU will not have a material impact on its consolidated financial statements.
	In April 2015, the FASB issued ASU 2015-05, “Intangibles – Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement.” This ASU provides guidance to customers about whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, the customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. The new guidance does not change the accounting for a customer’s accounting for service contracts. ASU 2015-05 is effective for interim and annual reporting periods beginning after December 15, 2015. The Company anticipates that the adoption of this ASU will not have a material impact on its consolidated financial statements.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Summary of Calculation of Basic and Diluted EPS	The calculation of basic and diluted EPS is presented below. There were no common stock equivalents in the three month period ending March 31, 2015.
		Three Months Ended
		31-Mar-15
	Net income (In Thousands)	$	149
	Basic Common Shares:
	Weighted average common shares outstanding		2,829,579
	Weighted average unallocated ESOP shares		(218,820	)
	Basic and diluted weighted average shares outstanding		2,610,759
	Basic earnings per share	$	0.06
	Diluted earnings per share	$	0.06

Investments_in_AvailableForSal1

Investments in Available-For-Sale Securities (Tables)	3 Months Ended
	Mar. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Amortized Cost Basis of Securities and Their Approximate Fair Values	The amortized cost basis of securities and their approximate fair values are as follows:
		Amortized		Gross		Gross
		Cost		Unrealized		Unrealized
		Basis		Gains		Losses		Fair Value
		(In Thousands)
	March 31, 2015: (unaudited)
	U.S. government and federal agency obligations	$	4,997	$	8	$	18	$	4,987
	Debt securities issued by states of the United States and political subdivisions of the states		542		—		3		539
	Corporate bonds and notes		16,602		52		14		16,640
	Preferred stock		3,000		34		32		3,002
	Mortgage-backed securities		2,444		—		22		2,422
	Marketable equity securities		14,875		2,698		407		17,166
		$	42,460	$	2,792	$	496	$	44,756
	December 31, 2014:
	U.S. government and federal agency obligations	$	4,007	$	3	$	20	$	3,990
	Debt securities issued by states of the United States and political subdivisions of the states		544		—		4		540
	Corporate bonds and notes		15,238		38		35		15,241
	Preferred stock		3,000		—		96		2,904
	Mortgage-backed securities		2,138		—		23		2,115
	Marketable equity securities		14,780		2,641		436		16,985
		$	39,707	$	2,682	$	614	$	41,775
Scheduled Maturities of Debt Securities	The scheduled maturities of debt securities were as follows as of the dates indicated:
		Fair
		Value
		(In Thousands)
	March 31, 2015 (unaudited)
	Due within one year	$	6,772
	Due after one year through five years		13,399
	Due after five years through ten years		2,016
	Due after ten years		1,022
	Mortgage-backed securities		2,422
	Asset-backed securities		991
	Preferred stock, no stated maturity		968
		$	27,590
		Fair
		Value
		(In Thousands)
	December 31, 2014
	Due within one year	$	5,278
	Due after one year through five years		12,990
	Due after five years through ten years		1,491
	Due after ten years		994
	Mortgage-backed securities		2,115
	Asset-backed securities		1,011
	Preferred stock, no stated maturity		911
		$	24,790
Aggregate Fair Value and Unrealized Losses of Securities in Continuous Unrealized Loss Position	The aggregate fair value and unrealized losses of securities that have been in a continuous unrealized loss position for less than twelve months and for twelve months or more, and are not other-than-temporarily impaired, are as follows:
		Less than 12 months				12 Months or Longer				Total
		Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
		Value		Losses		Value		Losses		Value		Losses
		(In Thousands)
	March 31, 2015: (unaudited)
	U.S. government and federal agency obligations	$	1,490	$	12	$	1,495	$	6	$	2,985	$	18
	Debt securities issued by states of the United States and political subdivisions of the states		539		3		—		—		539		3
	Corporate bonds and notes		1,004		5		1,489		9		2,493		14
	Preferred stock		—		—		938		32		938		32
	Mortgage-backed securities		2,423		22		—		—		2,423		22
	Marketable equity securities		—		—		9,363		407		9,363		407
	Total temporarily impaired securities	$	5,456	$	42	$	13,285	$	454	$	18,741	$	496
	December 31, 2014:
	U.S. government and federal agency obligations	$	2,006	$	6	$	1,486	$	14	$	3,492	$	20
	Debt securities issued by states of the United States and political subdivisions of the states		540		4		—		—		540		4
	Corporate bonds and notes		4,978		11		1,974		24		6,952		35
	Preferred stock		—		—		2,904		96		2,904		96
	Mortgage-backed securities		2,115		23		—		—		2,115		23
	Marketable equity securities		—		—		10,306		436		10,306		436
	Total temporarily impaired securities	$	9,639	$	44	$	16,670	$	570	$	26,309	$	614

Loans_Tables

Loans (Tables)	3 Months Ended
	Mar. 31, 2015
Receivables [Abstract]
Summary of Loans	Loans consisted of the following at:
		March 31,			December 31,
		2015			2014
		(In Thousands)
		(unaudited)
	Real estate loans:
	One-to four-family residential	$	118,998		$	118,144
	Home equity loans and lines of credit		10,802			10,811
	Commercial		2,472			2,462
	Construction		2,854			2,787
	Consumer loans		141			146
	Total loans		135,267			134,350
	Allowance for loan losses		(521	)		(520	)
	Deferred loan costs, net		79			80
	Net loans	$	134,825		$	133,910
Summary of Changes in Allowance for Loan Losses	The following tables set forth information on the allowance for loan losses at and for the three months ended (unaudited):
		Real Estate:
		One- to four-			Home Equity Loans							Consumer
		family Residential			and Lines of Credit			Commercial		Construction		Loans		Unallocated			Total
		(In Thousands)
	Three Months Ended March 31, 2015 (unaudited)
	Allowance for loan losses:
	Beginning balance	$	414		$	58		$	25	$	21	$	1	$	1		$	520
	Charge offs		—			—			—		—		—		—			—
	Recoveries		—			—			—		—		1		—			1
	Provision (benefit)		—			—			—		—		—		—			—
	Ending balance	$	414		$	58		$	25	$	21	$	2	$	1		$	521
	At March 31, 2015 (unaudited)
	Ending balance:
	Individually evaluated for impairment	$	—		$	—		$	—	$	—	$	—	$	—		$	—
	Ending balance:
	Collectively evaluated for impairment		414			58			25		21		2		1			521
	Total allowance for loan losses ending balance	$	414		$	58		$	25	$	21	$	2	$	1		$	521
	Loans:
	Ending balance:
	Individually evaluated for impairment	$	—		$	—		$	—	$	—	$	—	$	—		$	—
	Ending balance:
	Collectively evaluated for impairment		118,998			10,802			2,472		2,854		141		—			135,267
	Total loans ending balance	$	118,998		$	10,802		$	2,472	$	2,854	$	141	$	—		$	135,267
	Three Months Ended March 31, 2014 (unaudited)
	Allowance for loan losses:
	Beginning balance	$	414		$	55		$	20	$	14	$	1	$	6		$	510
	Charge offs		—			—			—		—		—		—			—
	Recoveries		—			—			—		—		—		—			—
	(Benefit) provision		(8	)		(1	)		10		5		—		(4	)		2
	Ending balance	$	406		$	54		$	30	$	19	$	1	$	2		$	512
	The following tables set forth information on the allowance for loan losses at December 31, 2014:
		Real Estate:
		One- to four-			Home Equity Loans							Consumer
		family Residential			and Lines of Credit			Commercial		Construction		Loans		Unallocated			Total
		(In Thousands)
	At December 31, 2014:
	Allowance for loan losses:
	Ending balance:
	Individually evaluated for impairment	$	—		$	—		$	—	$	—	$	—	$	—		$	—
	Ending balance:
	Collectively evaluated for impairment		414			58			25		21		1		1			520
	Total allowance for loan losses ending balance	$	414		$	58		$	25	$	21	$	1	$	1		$	520
	Loans:
	Ending balance:
	Individually evaluated for impairment	$	—		$	—		$	—	$	—	$	—	$	—		$	—
	Ending balance:
	Collectively evaluated for impairment		118,144			10,811			2,462		2,787		146		—			134,350
	Total loans ending balance	$	118,144		$	10,811		$	2,462	$	2,787	$	146	$	—		$	134,350
Information Regarding Nonaccrual Loans and Past-due Loans	The following tables set forth information regarding nonaccrual loans and past-due loans:
																	90 Days or More
		30 - 59			60 - 89			90 Days or		Total Past		Total					Past Due and		Non-
		Days			Days			More Past Due		Due		Current		Total			Accruing		Accrual
		(In Thousands)
	At March 31, 2015 (unaudited)
	Real estate loans:
	One-to four-family residential	$	1,099		$	25		$	268	$	1,392	$	117,606	$	118,998		$	—	$	505
	Home equity loans and lines of credit		—			—			202		202		10,600		10,802			—		202
	Commercial		—			—			—		—		2,472		2,472			—		—
	Construction		—			—			—		—		2,854		2,854			—		—
	Consumer loans		3			—			—		3		138		141			—		—
	Total	$	1,102		$	25		$	470	$	1,597	$	133,670	$	135,267		$	—	$	707
	At December 31, 2014
	Real estate loans:
	One-to four-family residential	$	817		$	122		$	113	$	1,052	$	117,092	$	118,144		$	—	$	421
	Home equity loans and lines of credit		—			198			4		202		10,609		10,811			—		202
	Commercial		—			—			—		—		2,462		2,462			—		—
	Construction		—			—			—		—		2,787		2,787			—		—
	Consumer loans		—			1			—		1		145		146			—		—
	Total	$	817		$	321		$	117	$	1,255	$	133,095	$	134,350		$	—	$	623

Premises_and_Equipment_Tables

Premises and Equipment (Tables)	3 Months Ended
	Mar. 31, 2015
Property, Plant and Equipment [Abstract]
Summary of Premises and Equipment	The following is a summary of premises and equipment:
		March 31,			December 31,
		2015			2014
		(In Thousands)
		(unaudited)
	Land	$	393		$	393
	Building and improvements		1,817			1,817
	Furniture and equipment		491			482
	Data processing equipment		218			217
			2,919			2,909
	Accumulated depreciation		(1,679	)		(1,655	)
		$	1,240		$	1,254

Deposits_Tables

Deposits (Tables)	3 Months Ended
	Mar. 31, 2015
Banking and Thrift [Abstract]
Scheduled Maturities of Time Deposits	For time deposits as of March 31, 2015 (unaudited) the scheduled maturities for each of the following years ended March 31 are as follows:
		(In Thousands)
	2016	$	33,212
	2017		26,985
	2018		4,761
	2019		5,073
	2020		610
		$	70,641

Financial_Instruments_Tables

Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2015
Investments, All Other Investments [Abstract]
Summary of Notional Amounts of Financial Instrument Liabilities with off-Balance Sheet Credit Risk	Notional amounts of financial instrument liabilities with off-balance sheet credit risk are as follows:
		March 31,		December 31,
		2015		2014
		(In Thousands)
		(unaudited)
	Commitments to originate loans	$	2,072	$	3,713
	Unused lines of credit		11,415		11,065
	Due to borrowers on unadvanced construction loans		491		323
		$	13,978	$	15,101

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Summary of Assets Measured at Fair Value on Recurring Basis	The following summarizes assets measured at fair value on a recurring basis:
		Fair Value Measurements at Reporting Date Using:
		Total		Quoted Prices in		Significant Other		Significant
				Active Markets		Observable		Unobservable
				for Identical Assets		Inputs		Inputs
				Level 1		Level 2		Level 3
		(In Thousands)
	March 31, 2015: (unaudited)
	U.S. government and federal agency obligations	$	4,987	$	—	$	4,987	$	—
	Debt securities issued by states of the United States and political subdivisions of the states		539		—		539		—
	Corporate bonds and notes		16,640		—		16,640		—
	Preferred stock		3,002		3,002		—		—
	Mortgage-backed securities		2,422		—		2,422		—
	Marketable equity securities		17,166		17,166		—		—
	Totals	$	44,756	$	20,168	$	24,588	$	—
	December 31, 2014:
	U.S. government and federal agency obligations	$	3,990	$	—	$	3,990	$	—
	Debt securities issued by states of the United States and political subdivisions of the states		540		—		540		—
	Corporate bonds and notes		15,241		—		15,241		—
	Preferred stock		2,904		2,904		—		—
	Mortgage-backed securities		2,115		—		2,115		—
	Marketable equity securities		16,985		16,985		—		—
	Totals	$	41,775	$	19,889	$	21,886	$	—
Summary of Estimated Fair Values of Bank's Financial Instruments	The estimated fair values of the Company’s financial instruments, all of which are held or issued for purposes other than trading, are as follows:
		March 31, 2015 (unaudited)
		Carrying		Fair Value
		Amount		Level 1		Level 2		Level 3		Total
		(In Thousands)
	Financial assets:
	Cash and cash equivalents	$	25,593	$	25,593	$	—	$	—	$	25,593
	Available-for-sale securities		44,756		20,168		24,588		—		44,756
	Federal Home Loan Bank stock		437		437		—		—		437
	Loans, net		134,825		—		—		135,719		135,719
	Co-operative Central Bank deposit		881		881		—		—		881
	Accrued interest receivable		403		403		—		—		403
	Financial liabilities:
	Deposits		166,706		—		167,881		—		167,881
		December 31, 2014
		Carrying		Fair Value
		Amount		Level 1		Level 2		Level 3		Total
		(In Thousands)
	Financial assets:
	Cash and cash equivalents	$	29,491	$	29,491	$	—	$	—	$	29,491
	Available-for-sale securities		41,775		19,889		21,886		—		41,775
	Federal Home Loan Bank stock		437		437		—		—		437
	Loans, net		133,910		—		—		135,513		135,513
	Co-operative Central Bank deposit		881		881		—		—		881
	Accrued interest receivable		382		382		—		—		382
	Financial liabilities:
	Deposits		167,071		—		167,881		—		167,881

Other_Comprehensive_Income_Tab

Other Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Components of Other Comprehensive Income Included in Stockholders' Equity	The components of other comprehensive income, included in stockholders’ equity, are as follows:
			For the three months ended March 31,
			2015			2014
			(In Thousands)
			(unaudited)
	Net unrealized holding gains on available-for-sale securities		$	229		$	455
	Reclassification adjustment for realized gains in net income (1)			(1	)		—
	Other comprehensive income before income tax effect			228			455
	Income tax expense			(84	)		(163	)
	Other comprehensive income, net of tax		$	144		$	292
	-1	Reclassification adjustments include realized securities gains. Gains have been reclassified out of accumulated other comprehensive income and affect certain captions in the consolidated statements of income as follows: pre-tax amount is reflected as a gain on sale of securities, the tax effect is included in income tax expense, and the after-tax amount is included in net income.

Regulatory_Matters_Tables

Regulatory Matters (Tables)	3 Months Ended
	Mar. 31, 2015
Banking and Thrift [Abstract]
Summary of Actual Capital Amounts and Ratios	The Bank’s actual capital amounts and ratios are presented in the following table.
			March 31,			December 31,
			2015			2014
			(Dollars in Thousands)
	Regulatory Capital:
	Stockholders’ Equity		$	32,882		$	32,595
	Less: Net unrealized gains on investment securities			(1,375	)		(1,231	)
	Common Equity Tier 1 Capital			31,507			N/A
	Tier 1 Capital			31,507			31,364
	Allowable Reserve for Credit Losses and Unfunded Commitments			1,552			1,510
	Total Regulatory Capital (1)		$	33,059		$	32,874
	Risk-weighted assets (1)		$	116,880		$	119,395
	Key Regulatory Capital Ratios (1):
	Common Equity Tier 1 Capital Ratio			26.96	%		N/A
	Tier 1 Capital Ratio			26.96	%		26.27	%
	Total Capital Ratio			28.28	%		27.53	%
	Tier 1 Leverage Ratio			15.1	%		14.78	%
	-1	March 31, 2015 capital levels and ratios were calculated under the new capital regulations, which became effective January 1, 2015.

Nature_of_Operations_Additiona

Nature of Operations - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended
	Oct. 21, 2014	Mar. 31, 2015	Oct. 21, 2014
Nature Of Operations [Line Items]
Entity incorporation date	1-Feb-14
Aggregate issuance of common stock	2,829,579
Common stock , price per share	$10		$10
Net proceeds from the stock offering	$25,518,000
Stock offering costs	$1,716,000
Shares sold under employee stock ownership plan		226,366
Melrose Cooperative Bank [Member]
Nature Of Operations [Line Items]
Aggregate issuance of common stock	2,723,409
Melrose Cooperative Bank Foundation [Member]
Nature Of Operations [Line Items]
Common stock, shares sold	106,170		106,170
Massachusetts [Member]
Nature Of Operations [Line Items]
Melrose Cooperative Bank (Number of banking office)		1

Summary_of_Significant_Account3

Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Significant Accounting Policies [Line Items]
Common stock equivalents	0
Eastern Bank [Member]
Significant Accounting Policies [Line Items]
Total cash and cash equivalents	$6,298,000	$7,440,000
Percentage of cash and cash equivalent of stockholders equity	13.80%	16.40%
State Street Bank [Member]
Significant Accounting Policies [Line Items]
Total cash and cash equivalents	$2,993,000	$2,993,000
Percentage of cash and cash equivalent of stockholders equity	6.50%	6.60%

Summary_of_Significant_Account4

Summary of Significant Accounting Policies - Summary of Calculation of Basic and Diluted EPS (Detail) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Net income	$149	$159
Basic Common Shares:
Weighted average common shares outstanding	2,829,579
Weighted average unallocated ESOP shares	-218,820
Basic and diluted weighted average shares outstanding	2,610,759
Basic earnings per share	$0.06
Diluted earnings per share	$0.06

Investments_in_AvailableForSal2

Investments in Available-For-Sale Securities - Amortized Cost Basis of Securities and Their Approximate Fair Values (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	$42,460	$39,707
Gross Unrealized Gains	2,792	2,682
Gross Unrealized Losses	496	614
Fair Value	44,756	41,775
U.S Government and Federal Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	4,997	4,007
Gross Unrealized Gains	8	3
Gross Unrealized Losses	18	20
Fair Value	4,987	3,990
Debt Securities Issued by States of the United States and Political Subdivisions of the States [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	542	544
Gross Unrealized Losses	3	4
Fair Value	539	540
Corporate Bonds and Notes [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	16,602	15,238
Gross Unrealized Gains	52	38
Gross Unrealized Losses	14	35
Fair Value	16,640	15,241
Preferred Stock [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	3,000	3,000
Gross Unrealized Gains	34
Gross Unrealized Losses	32	96
Fair Value	3,002	2,904
Mortgage-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	2,444	2,138
Gross Unrealized Losses	22	23
Fair Value	2,422	2,115
Marketable Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	14,875	14,780
Gross Unrealized Gains	2,698	2,641
Gross Unrealized Losses	407	436
Fair Value	$17,166	$16,985

Investments_in_AvailableForSal3

Investments in Available-For-Sale Securities - Scheduled Maturities of Debt Securities (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]
Due within one year	$6,772	$5,278
Due after one year through five years	13,399	12,990
Due after five years through ten years	2,016	1,491
Due after ten years	1,022	994
Mortgage-backed securities	2,422	2,115
Asset-backed securities	991	1,011
Debt security, fair value	27,590	24,790
Preferred Stock [Member]
Schedule of Available-for-sale Securities [Line Items]
Preferred stock, no stated maturity	$968	$911

Recovered_Sheet1

Investments In Available-For-Sale Securities - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Number of securities with aggregate carrying value exceeding 10% of stockholders' equity	0		0
Proceeds from sale of available-for-sale securities	$1,034,000	$0
Gross realized gain on sale of available-for-sale security	1,000
Gross realized losses on sales of available-for-sale securities	0
Pledged securities	0		0
Percentage of unrealized losses of debt securities with amortized cost	2.50%		2.00%
Maximum [Member]
Schedule of Available-for-sale Securities [Line Items]
Tax expense applicable to net realized gain	1,000
Individual losses of mutual fund costs, percent	0.70%		8.40%
Minimum [Member]
Schedule of Available-for-sale Securities [Line Items]
Individual losses of mutual fund costs, percent	0.10%		0.80%
Kayne Anderson MLP [Member]
Schedule of Available-for-sale Securities [Line Items]
Unrealized losses			1,000
Kayne Anderson MLP [Member] | Maximum [Member]
Schedule of Available-for-sale Securities [Line Items]
Percentage of unrealized losses of debt securities with amortized cost			0.10%
General Electrical Capital Corporation [Member]
Schedule of Available-for-sale Securities [Line Items]
Percentage of unrealized losses of debt securities with amortized cost			0.60%
Unrealized losses			6,000
Public Storage Inc. [Member]
Schedule of Available-for-sale Securities [Line Items]
Percentage of unrealized losses of debt securities with amortized cost			8.90%
Unrealized losses			89,000
GNMA Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Percentage of unrealized losses of debt securities with amortized cost	4.30%		4.60%
Unrealized losses	185,000		198,000
Number of Mutual Fund	2
Short Term Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Percentage of unrealized losses of debt securities with amortized cost	4.10%
Unrealized losses	222,000
Number of Mutual Fund	4
U.S Government and Federal Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Unrealized losses	18,000		19,000
Unrealized losses, securities	4		4
Corporate Bonds and Notes [Member]
Schedule of Available-for-sale Securities [Line Items]
Unrealized losses	14,000		35,000
Unrealized losses, securities	4		12
Mortgage Backed And Asset Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Unrealized losses			24,000
Unrealized losses, securities			3
Preferred Stock [Member]
Schedule of Available-for-sale Securities [Line Items]
Percentage of unrealized losses of debt securities with amortized cost	3.20%		3.20%
Unrealized losses	32,000		96,000
Five Mutual Fund Investment [Member]
Schedule of Available-for-sale Securities [Line Items]
Percentage of unrealized losses of debt securities with amortized cost			3.70%
Unrealized losses			238,000
Municipal Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Unrealized losses			$4,000
Unrealized losses, securities			2

Investments_in_AvailableForSal4

Investments in Available-For-Sale Securities - Aggregate Fair Value and Unrealized Losses of Securities in Continuous Unrealized Loss Position (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months Fair Value	$5,456	$9,639
Less than 12 Months Unrealized Losses	42	44
12 Months or Longer Fair Value	13,285	16,670
12 Months or Longer Unrealized Losses	454	570
Total Fair Value	18,741	26,309
Total Unrealized Losses	496	614
U.S Government and Federal Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months Fair Value	1,490	2,006
Less than 12 Months Unrealized Losses	12	6
12 Months or Longer Fair Value	1,495	1,486
12 Months or Longer Unrealized Losses	6	14
Total Fair Value	2,985	3,492
Total Unrealized Losses	18	20
Debt Securities Issued by States of the United States and Political Subdivisions of the States [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months Fair Value	539	540
Less than 12 Months Unrealized Losses	3	4
Total Fair Value	539	540
Total Unrealized Losses	3	4
Corporate Bonds and Notes [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months Fair Value	1,004	4,978
Less than 12 Months Unrealized Losses	5	11
12 Months or Longer Fair Value	1,489	1,974
12 Months or Longer Unrealized Losses	9	24
Total Fair Value	2,493	6,952
Total Unrealized Losses	14	35
Preferred Stock [Member]
Schedule of Available-for-sale Securities [Line Items]
12 Months or Longer Fair Value	938	2,904
12 Months or Longer Unrealized Losses	32	96
Total Fair Value	938	2,904
Total Unrealized Losses	32	96
Mortgage-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months Fair Value	2,423	2,115
Less than 12 Months Unrealized Losses	22	23
Total Fair Value	2,423	2,115
Total Unrealized Losses	22	23
Marketable Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
12 Months or Longer Fair Value	9,363	10,306
12 Months or Longer Unrealized Losses	407	436
Total Fair Value	9,363	10,306
Total Unrealized Losses	$407	$436

Loans_Summary_of_Loans_Detail

Loans - Summary of Loans (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	$135,267	$134,350
Allowance for loan losses	-521	-520	-512	-510
Deferred loan costs, net	79	80
Net loans	134,825	133,910
One- to Four- Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	118,998	118,144
Allowance for loan losses	-414	-414	-406	-414
Home Equity Loans and Lines of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	10,802	10,811
Allowance for loan losses	-58	-58	-54	-55
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	2,472	2,462
Allowance for loan losses	-25	-25	-30	-20
Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	2,854	2,787
Allowance for loan losses	-21	-21	-19	-14
Consumer Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	141	146
Allowance for loan losses	($2)	($1)	($1)	($1)

Loans_Summary_of_Changes_in_Al

Loans - Summary of Changes in Allowance for Loan Losses (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Schedule Of Allowance For Loan Losses [Line Items]
Beginning balance	$520	$510
Charge offs	0	0
Recoveries	1
(Benefit) provision		2
Ending balance	521	512
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	521		520
Total allowance for loan losses ending balance	521		520
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	135,267		134,350
Total	135,267		134,350
One- to Four- Family Residential [Member]
Schedule Of Allowance For Loan Losses [Line Items]
Beginning balance	414	414
Charge offs	0	0
(Benefit) provision		-8
Ending balance	414	406
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	414		414
Total allowance for loan losses ending balance	414		414
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	118,998		118,144
Total	118,998		118,144
Home Equity Loans and Lines of Credit [Member]
Schedule Of Allowance For Loan Losses [Line Items]
Beginning balance	58	55
Charge offs	0	0
(Benefit) provision		-1
Ending balance	58	54
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	58		58
Total allowance for loan losses ending balance	58		58
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	10,802		10,811
Total	10,802		10,811
Commercial [Member]
Schedule Of Allowance For Loan Losses [Line Items]
Beginning balance	25	20
Charge offs	0	0
(Benefit) provision		10
Ending balance	25	30
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	25		25
Total allowance for loan losses ending balance	25		25
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	2,472		2,462
Total	2,472		2,462
Construction [Member]
Schedule Of Allowance For Loan Losses [Line Items]
Beginning balance	21	14
Charge offs	0	0
(Benefit) provision		5
Ending balance	21	19
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	21		21
Total allowance for loan losses ending balance	21		21
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	2,854		2,787
Total	2,854		2,787
Consumer Loans [Member]
Schedule Of Allowance For Loan Losses [Line Items]
Beginning balance	1	1
Charge offs	0	0
Recoveries	1
Ending balance	2	1
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	2		1
Total allowance for loan losses ending balance	2		1
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	141		146
Total	141		146
Unallocated [Member]
Schedule Of Allowance For Loan Losses [Line Items]
Beginning balance	1	6
Charge offs	0	0
(Benefit) provision		-4
Ending balance	1	2
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	1		1
Total allowance for loan losses ending balance	1		1
Individually evaluated for impairment	$0		$0

Loans_Information_Regarding_No

Loans - Information Regarding Nonaccrual Loans and Past-due Loans (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days	$1,102	$817
60-89 Days	25	321
90 Days or More Past Due	470	117
Total Past Due	1,597	1,255
Total Current	133,670	133,095
Total	135,267	134,350
90 Days Or More Past Due and Accruing	0	0
Non-Accrual	707	623
One- to Four- Family Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days	1,099	817
60-89 Days	25	122
90 Days or More Past Due	268	113
Total Past Due	1,392	1,052
Total Current	117,606	117,092
Total	118,998	118,144
90 Days Or More Past Due and Accruing	0	0
Non-Accrual	505	421
Home Equity Loans and Lines of Credit [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
60-89 Days		198
90 Days or More Past Due	202	4
Total Past Due	202	202
Total Current	10,600	10,609
Total	10,802	10,811
90 Days Or More Past Due and Accruing	0	0
Non-Accrual	202	202
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Current	2,472	2,462
Total	2,472	2,462
90 Days Or More Past Due and Accruing	0	0
Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Current	2,854	2,787
Total	2,854	2,787
90 Days Or More Past Due and Accruing	0	0
Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days	3
60-89 Days		1
Total Past Due	3	1
Total Current	138	145
Total	141	146
90 Days Or More Past Due and Accruing	$0	$0

Loans_Additional_Information_D

Loans - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired loan	$0	$0
Troubled debt restructured loan	0	0
Home Equity Loans and Lines of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired with deteriorated credit quality	202,000		202,000
One- to Four- Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired with deteriorated credit quality	$375,000		$394,000

Premises_and_Equipment_Summary

Premises and Equipment - Summary of Premises and Equipment (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$2,919	$2,909
Accumulated depreciation	-1,679	-1,655
Premises and equipment, net	1,240	1,254
Land [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	393	393
Building and Improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	1,817	1,817
Furniture and Equipment [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	491	482
Data Processing Equipment [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$218	$217

Deposits_Additional_Informatio

Deposits - Additional Information (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Time Deposits [Abstract]
Aggregate time deposit in denominations	$34,640,000	$34,583,000
FDIC insurance limit	250,000
Aggregate amount of time deposit	12,500,000	12,015,000
Deposits from related parties held by bank	$5,425,000	$5,044,000

Deposits_Scheduled_Maturities_

Deposits - Scheduled Maturities of Time Deposits (Detail) (USD $)	Mar. 31, 2015
In Thousands, unless otherwise specified
Time Deposits [Abstract]
2016	$33,212
2017	26,985
2018	4,761
2019	5,073
2020	610
Total	$70,641

Borrowed_Funds_Additional_Info

Borrowed Funds - Additional Information (Detail) (USD $)	Mar. 31, 2015
Cooperative Central Bank [Member]
Borrowed Funds [Line Items]
Maximum borrowing capacity	$5,000,000
Federal Home Loan Bank of Boston [Member]
Borrowed Funds [Line Items]
Maximum borrowing capacity	$88,300,000

Financial_Instruments_Summary_

Financial Instruments - Summary of Notional Amounts of Financial Instrument Liabilities with off-Balance Sheet Credit Risk (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instrument liabilities with off-balance sheet credit risk	$13,978	$15,101
Commitments to Originate Loans [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instrument liabilities with off-balance sheet credit risk	2,072	3,713
Unused Lines of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instrument liabilities with off-balance sheet credit risk	11,415	11,065
Construction Loans [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instrument liabilities with off-balance sheet credit risk	$491	$323

Fair_Value_Measurements_Summar

Fair Value Measurements - Summary of Assets Measured at Fair Value on Recurring Basis (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value on a recurring basis	$44,756	$41,775
U.S Government and Federal Agency Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value on a recurring basis	4,987	3,990
Debt Securities Issued by States of the United States and Political Subdivisions of the States [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value on a recurring basis	539	540
Corporate Bonds and Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value on a recurring basis	16,640	15,241
Preferred Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value on a recurring basis	3,002	2,904
Mortgage-backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value on a recurring basis	2,422	2,115
Marketable Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value on a recurring basis	17,166	16,985
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value on a recurring basis	20,168	19,889
Level 1 [Member] | Preferred Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value on a recurring basis	3,002	2,904
Level 1 [Member] | Marketable Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value on a recurring basis	17,166	16,985
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value on a recurring basis	24,588	21,886
Level 2 [Member] | U.S Government and Federal Agency Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value on a recurring basis	4,987	3,990
Level 2 [Member] | Debt Securities Issued by States of the United States and Political Subdivisions of the States [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value on a recurring basis	539	540
Level 2 [Member] | Corporate Bonds and Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value on a recurring basis	16,640	15,241
Level 2 [Member] | Mortgage-backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value on a recurring basis	$2,422	$2,115

Fair_Value_Measurements_Summar1

Fair Value Measurements - Summary of Estimated Fair Values of Bank's Financial Instruments (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Financial assets:
Available-for-sale securities	$44,756	$41,775
Federal Home Loan Bank stock	437	437
Co-operative Central Bank deposit	881	881
Accrued interest receivable	403	382
Carrying Amount [Member]
Financial assets:
Cash and cash equivalents	25,593	29,491
Available-for-sale securities	44,756	41,775
Federal Home Loan Bank stock	437	437
Loans, net	134,825	133,910
Co-operative Central Bank deposit	881	881
Accrued interest receivable	403	382
Financial liabilities:
Deposits	166,706	167,071
Estimate of Fair Value Measurement [Member]
Financial assets:
Cash and cash equivalents	25,593	29,491
Available-for-sale securities	44,756	41,775
Federal Home Loan Bank stock	437	437
Loans, net	135,719	135,513
Co-operative Central Bank deposit	881	881
Accrued interest receivable	403	382
Financial liabilities:
Deposits	167,881	167,881
Level 1 [Member] | Estimate of Fair Value Measurement [Member]
Financial assets:
Cash and cash equivalents	25,593	29,491
Available-for-sale securities	20,168	19,889
Federal Home Loan Bank stock	437	437
Co-operative Central Bank deposit	881	881
Accrued interest receivable	403	382
Level 2 [Member] | Estimate of Fair Value Measurement [Member]
Financial assets:
Available-for-sale securities	24,588	21,886
Financial liabilities:
Deposits	167,881	167,881
Level 3 [Member] | Estimate of Fair Value Measurement [Member]
Financial assets:
Loans, net	$135,719	$135,513

Other_Comprehensive_Income_Com

Other Comprehensive Income - Components of Other Comprehensive Income Included in Stockholders' Equity (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net unrealized holding gains on available-for-sale securities	$229	$455
Reclassification adjustment for realized gains in net income	-1
Other comprehensive income before income tax effect	228	455
Income tax expense	-84	-163
Other comprehensive income, net of tax	$144	$292

Regulatory_Matters_Additional_

Regulatory Matters - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 capital to risk weighted assets, minimum capital requirement ratio	4.00%
Tier 1 capital to risk weighted assets, minimum to be well capitalized ratio	6.00%
Tier 1 capital to risk-weighted assets	26.96%	26.27%
Non accrual status of loans, percentage	100.00%
Non cancellable unused portion of commitments, percentage	0.00%
Risk weight for mortgage servicing rights and deferred tax assets non deductible from capital, percentage	100.00%
Risk weight for equity exposures, percentage	0.00%
Loans past due period	90 days
Non cancellable unused portion of commitments, description	Less than one year
New Capital Regulations [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity tier 1 capital, minimum capital requirement ratio	4.50%
Total capital to risk weighted assets, minimum capital requirement ratio	8.00%
Tier 1 capital to risk weighted assets, minimum capital requirement ratio	6.00%
Tier 1 leverage ratio, minimum capital requirement ratio	4.00%
Common equity tier 1 capital, minimum to be well capitalized ratio	6.50%
Total capital to risk weighted assets, minimum to be well capitalized ratio	10.00%
Tier 1 capital to risk weighted assets, minimum to be well capitalized ratio	8.00%
Tier 1 leverage ratio, minimum to be well capitalized ratio	5.00%
Non accrual status of loans, percentage	150.00%
Non cancellable unused portion of commitments, percentage	20.00%
Risk weight for mortgage servicing rights and deferred tax assets non deductible from capital, percentage	250.00%
Risk weight for equity exposures, percentage	600.00%
Maximum [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Phase in period term	4 years
Minimum [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Phase in period term	2 years
January 1, 2016 [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 capital to risk-weighted assets	0.63%
Subsequent Period [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 capital to risk-weighted assets	0.63%
January 1, 2019 [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 capital to risk-weighted assets	2.50%

Regulatory_Matters_Summary_of_

Regulatory Matters - Summary of Actual Capital Amounts and Ratios (Detail) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Regulatory Capital:
Stockholders' Equity	$32,882	$32,595
Less: Net unrealized gains on investment securities	-1,375	-1,231
Common Equity Tier 1 Capital	31,507
Tier 1 Capital	31,507	31,364
Allowable Reserve for Credit Losses and Unfunded Commitments	1,552	1,510
Total Regulatory Capital	33,059	32,874
Risk-weighted assets	$116,880	$119,395
Key Regulatory Capital Ratios:
Common Equity Tier 1 Capital Ratio	26.96%
Tier 1 Capital Ratio	26.96%	26.27%
Total Capital Ratio	28.28%	27.53%
Tier 1 Leverage Ratio	15.10%	14.78%